What Differentiates TechStars

What differentiates TechStars from YCombinator and other accelerators?

The one thing that differentiates TechStars is the mentorship network.

For example Y-Combinator does have an aspect of mentorship, but it is not really emphasized. The class sizes are also larger. TechStars has smaller classes, and there is a huge emphasis on utilizing this network. Once you are in TechStars you will always have the ability to tap into this network of people.